One thing to look for is the attribute munging when Exchange 2000 environment on Windows 2000 AD to Windows 2003 upgrade takes place. Otherwise, seems like a good approach. There's a kb about adprep and an Exchange fix for it. Al _____ From: Eric Lanyon [mailto:ELanyon@xxxxxxx] Sent: Friday, March 19, 2004 1:48 PM To: [ExchangeList] Subject: [exchangelist] Exchange Migration http://www.MSExchange.org/ I am looking at migrating from Win/Exchange 2000 to 2003 later this year. Does anyone have any best practices or any gotchas I should look for? I am going to be attempting it first in a test-bed (obviously) then out on production machines. The migration will occur on new hardware, so doing an in-place upgrade will most likely not happen (though it might at a remote office or two). I have read this article <http://msexchange.org/tutorials/Upgrade_Exchange_2000_to_2003.html> http://msexchange.org/tutorials/Upgrade_Exchange_2000_to_2003.html, but am curious what anyone who has done might be able to contribute. My idea was to setup a new DC on 2000, do an in-place upgrade to 2003. Then subsequent DCs be installed with 2003 After setting up a 2003 server (non-DC) install Exchange 2003 and move the mailboxes over to the new box. Is that a good approach? I have heard that you can have two Exchange servers and quarterly upgrade the non-used box with the latest patches and then move mailboxes to it. That'll defrag the DB and clean out orphan emails, etc. A good approach? TIA for the advice, eric ------------------------------------------------------ List Archives: http://www.webelists.com/cgi/lyris.pl?enter=exchangelist Exchange Newsletters: http://www.msexchange.org/pages/newsletter.asp Exchange FAQ: http://www.msexchange.org/pages/larticle.asp?type=FAQ ------------------------------------------------------ Other Internet Software Marketing Sites: Leading Network Software Directory: http://www.serverfiles.com No.1 ISA Server Resource Site: http://www.isaserver.org Windows Security Resource Site: http://www.windowsecurity.com/ Network Security Library: http://www.secinf.net/ Windows 2000/NT Fax Solutions: http://www.ntfaxfaq.com ------------------------------------------------------